This mushroom kit was first launched at the Berkeley Whole Foods in the hopes of bringing our sustainable urban mushroom farm one step more local...into your kitchen! Just place the mushroom kit on a windowsill and mist twice a day with the provided mister. Within ~7 days , you'll see little mushroom pinheads coming out...after that, it's off to the races as they double in size every day and you can harvest them before you know it!